Improvement in brick-machines



Improvement in Brick Machines.

Patened Dec. i2, 1871.

Wituwm: cave/@@5501 J. TREADWAY. No.

f UNTTED STATES PATENT Grrrcn.

JOHN TREADWAY, OF HAVERSTRAVV, NEW YORK.

IMPROVEMENT IN BRICK-MACHINES.

Specication forming part of Letters Patent N o. 121, 25, dated December 12, 1871.

To all whom it may concern:

Be it known that I, JOHN TRnAnwAY, of Haverstraw, in the county of Rockland and State of New York, have invented a new and useful Improvement in Brick-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

My object in this invention is to improve and obviate objections to a machine for manufacturing bricks, which is already secured to me by Letters Patent of the United States; and it consists in the mechanism for varying the action of the presser and operating the follower, and in a joint-box for the presser-guide, as I will proceed to describe.

In the accompanying drawing, Figure l is a side elevation ofthe machine, showing the mode of varying and intermitting the action of the presser. Fig. 2 is a vertical section of the machine with the outside mechanism removed, showing the mechanical devices for operating the follower, which pushes out the brick-molds. Fig. 3 is a vertical section of Fig. 2 taken on the line w Fig. 4. is a horizontal section of Fig. 2 on the line y y.

Similarletters of reference indicate corresponding parts.

A represents the frame of the machine, which incloses the pug-mill for preparing the clay, and the ordinary device for forcing the clay down into the brick-molds. B is the pug-mill or driving-shaft, from which all the operating parts of the machine receive their motion. The bevelwheel G on the main shaft meshes into a wheel on the horizontal shaft D. E is a pulley on the shaft D. F is another horizontal shaft, which receives its motion from the pulley E by a belt, G. H is a crank on the end of the shaft F. I is the pressershaft, extendinghorizontally across the front side of the machine. J is an arm on the end of the shaft I, made in two parts, connected together by the upright bar K. This bar K has notches L, one or more, in its edge, as seen in Fig. l. M is a forked connecting-rod, one end of which is connected with the Wrist of the crank H. Through the forked end is a pin, N, which engages with the notch o r notches L in the bar K. As the crank H revolves the power to the presser-shaft is thus applied, the shaft being rocked for pressing the brick whenever the pin N in its descent is brought in contact with one of the notches L. The positions of the pin N and the end of the connecting-rod are controlled by the shittingbar O by means of two slotted plates P, one on each side of the arm J and notched bar K. qis the slot in each of these plates. As the connecting-rod is thrown up and down by the crank the pin N works in the slots. The two plates I) are pivoted to the bottom end of the notched bar K, and also to the end of the shifting-bar O. This bar O may be shoved inward or pulled outward, and it is held in any desired position by means ot notches It and the guide S, seen in Fig. 41. When the rod O is pushed in it throws the pin N either from one to another of the notches L or from the notches entirely. Starting from the upper notch, which gives the greatest amount ofpressure to the brick, the bar may be pushed inward, so that the pin will engage with the next notch below, which .gives the brick less pressure, and so on, let there be more or less notches; and when pushed inward so as to disengage the pin from all the notches the connecting-rod and pin will work up and down Without moving the presser-shaft. By means of the shifting-bar O the presser-shaft ismade to rock more or less, or to instantly stand still, as may be desired, while the crank revolves without cessation. P is a pulley on the crank-shaft F. It is a cam `with a projecting rack-bar, S', which bar engages with the sectorwheel T. The cam is thrown back and forth by means of a pin in the pulley P', seen at U. The sector-wheel is on the end ofthe horizontal shaftV, upon which shaft are two arms, which are connected with the follower, and as the shaft V is rocked by the movement of the cam-rack S on the sector-wheel T the follower is moved back and forth, shoving out onto the apron W the brick-molds from beneath the presser. The arm on the shaft V, and the rods which connect them with the follower, are seen in dotted lines in Figs. l and 2. The presser is seen at X, Fig. 4, and is operated vertically by means of the rods Y Y connected therewith at their lower ends, and with the arms Z Z on the presser shaft at their other ends. a is the presser-casing, beneath which the brickmolds are shoved out by the follower with the proper quantity of clay therein. The next movement of the follower shovcs the mold, with the pressed brick, out from beneath the presser, and puts another mold tilled with elay in its plaee. The molds, with the pressed hrieli, are removed as fast as they are pressed. This part ot' the operation is the same as in my patented machine, and forms no part ot' my present invention; but there is one t'eatnre ot the presser whieh l do claim as new, and that iseontining'the guide-rod c otl the presser by a elamp-box. Il, instead ot' the ordinary iournal-lmx eontined to the side o1' the mill by bolts. The eap e ot'this box isjointed to the bed, as seen atf, and is fastened by a haspand pin, y. \\'hile this guide keeps the press er tightly upto the side ot'the mill the eapis readily relnoved, so that the presser may he taken out in ease a stone or other obstruetion, eolnbined with the elay intereres with its propel-operation. ly the old plan serew-nuts have to he removed and inueh time lost in takingv out the presser. The motion ot' the eam lt by whieh the t'ollower is operated, and the motion ot' the arms J by which the presser is operated, are both regulated so as to art in unison, or at the precise moment ot' time required. Should any accident occur the belt G Will slip; but that Wil1 not derange or alter the motions referred to, as they are both driven from the same shaft. Gearwheels have heretofore been used to impart motion from the pulley-sl1aft D to the crank-shaft F, with which arrangement breakages are frequent. ly the belt-connection all danger is avoided.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The arm J and bar K provided with notches L, in combination with connecting-rod M, pin N, slotted plates l l, and sliit'tingbar O, substantially as and t'or the purposes set forth.

2. The joint-box d, in combination with the guide-rod e and presser-plate X, substantially and for the purpose described.

J. The eam It', rack S', sector-wheel T, pulley l", and pin U, arranged to operate substantially as and t'or the purposes described.

JOHN TREADWAY.

VtnesseS:

UHARLEs WALDRON, JAMES WALnRoN. (20) 

